Sleep away from the piazza. Day-walk San Marco at opening. The islands are a separate day.
San Marco
Basilica, palace, piazza. Dawn or evening. Midday is a crush.
Dorsoduro and Cannaregio
The sestieri for eating and staying. Accademia and the Zattere walk in Dorsoduro; Jewish Ghetto and bacari in Cannaregio.
Rialto market
Morning fish. Closed by afternoon. A neighbourhood hour, not a souvenir strip.
The lagoon islands
Murano, Burano, Torcello. One vaporetto day. Do not squeeze them into a San Marco morning.